ADF4108BRUZ AD [Analog Devices], ADF4108BRUZ Datasheet - Page 8

• Manufacturer Part Number: ADF4108BRUZ
• Description: PLL Frequency Synthesizer
• Manufacturer: AD [Analog Devices]

ADF4108
TYPICAL PERFORMANCE CHARACTERISTICS
–100
–110
–120
–130
–140
–150
–50
–60
–70
–80
–90
–10
–15
–20
–25
–30
–35
1kHz
–5
0
1
V
I
PFD FREQUENCY = 1MHz
LOOP BANDWIDTH = 50kHz
PHASE NOISE = –82dBc/Hz @ 1kHz
HMC506LP4 VCO
CP
DD
Freq
0.50000
0.60000
0.70000
0.80000
0.90000
1.00000
1.10000
1.20000
1.30000
1.40000
1.50000
1.60000
1.70000
1.80000
1.90000
2.00000
2.10000
2.20000
2.30000
2.40000
2.50000
2.60000
2.70000
2.80000
2.90000
3.00000
3.10000
3.20000
3.30000
3.40000
3.50000
3.60000
3.70000
3.80000
3.90000
4.00000
4.10000
4.20000
V
FREQ UNIT:
PARAM TYPE:
DATA FORMAT: MA
= 5mA
DD
= 3.3V, V
Figure 7. Phase Noise at 7.9 GHz Phase Noise
Figure 5. S Parameter Data for the RF Input
= 3.3V
2
MAGS11
0.89148
0.88133
0.87152
0.85855
0.84911
0.83512
0.82374
0.80871
0.79176
0.77205
0.75696
0.74234
0.72239
0.69419
0.67288
0.66227
0.64758
0.62454
0.59466
0.55932
0.52256
0.48754
0.46411
0.45776
0.44859
0.44588
0.43810
0.43269
0.42777
0.42859
0.43365
0.43849
0.44475
0.44800
0.45223
0.45555
0.45313
0.45622
P
Figure 6. RF Input Sensitivity
GHz
s
= 5V
3
RF INPUT FREQUENCY (GHz)
ANGS11
–17.2820
–20.6919
–24.5386
–27.3228
–31.0698
–34.8623
–38.5574
–41.9093
–45.6990
–49.4185
–52.8898
–56.2923
–60.2584
–63.1446
–65.6464
–68.0742
–71.3530
–75.5658
–79.6404
–82.8246
–85.2795
–85.6298
–86.1854
–86.4997
–88.8080
–91.9737
–95.4087
–99.1282
–102.748
–107.167
–111.883
–117.548
–123.856
–130.399
–136.744
–142.766
–149.269
–154.884
FREQUENCY OFFSET
KEYWORD: R
4
5
Freq
4.30000
4.40000
4.50000
4.60000
4.70000
4.80000
4.90000
5.00000
5.10000
5.20000
5.30000
5.40000
5.50000
5.60000
5.70000
5.80000
5.90000
6.00000
6.10000
6.20000
6.30000
6.40000
6.50000
6.60000
6.70000
6.80000
6.90000
7.00000
7.10000
7.20000
7.30000
7.40000
7.50000
7.60000
7.70000
7.80000
7.90000
8.00000
6
0.45555
0.46108
0.45325
0.45054
0.45200
0.45043
0.45282
0.44287
0.44909
0.44294
0.44558
0.45417
0.46038
0.47128
0.47439
0.48604
0.50637
0.52172
0.53342
0.53716
0.55804
0.56362
0.58268
0.59248
0.61066
0.61830
0.61633
0.61673
0.60597
0.58376
0.57673
0.58157
0.60040
0.61332
0.62927
0.63938
0.65320
0.65804
MAGS11
T
T
A
A
= +85°C
= +25°C
7
ANGS11
–159.680
–164.916
–168.452
–173.462
–176.697
178.824
174.947
170.237
166.617
162.786
158.766
153.195
147.721
139.760
132.657
125.782
121.110
115.400
107.705
101.572
97.5379
93.0936
89.2227
86.3300
83.0956
80.8843
78.0872
75.3727
73.9456
73.5883
74.1975
76.2136
77.1545
76.1122
74.8359
74.0546
72.0061
69.9926
T
A
8
= –40°C
10MHz
9
Rev. 0 | Page 8 of 20
Note: The spurs are dominated by the leakage current of the tuning port on
the HMC506LP4 VCO. The leakage current was measured to be 27 nA.
–120
–130
–140
–150
–160
–170
–180
Figure 10. Phase Noise (Referred to CP Output) vs. PFD Frequency
–100
–120
–20
–40
–60
–80
–1
–2
–3
–4
–5
–6
10k
6
5
4
3
2
1
0
0
0
V
I
PFD FREQUENCY = 1MHz
LOOP BANDWIDTH = 50kHz
RES BANDWIDTH = 3kHz
VIDEO BANDWIDTH = 3kHz
AVERAGES = 1
OUTPUT POWER = –0.3dBm
HMC506LP4 VCO
CP
DD
–2MHz
Figure 9. Charge Pump Output Characteristics
0.5
= 5mA
= 3.3V, V
Figure 8. Reference Spurs at 7.9 GHz
1.0
PHASE FREQUENCY DETECTOR (Hz)
100k
P
–1MHz
= 5V
1.5
2.0
FREQUENCY
7900MHz
V
CP
1M
2.5
(V)
–0.3dBm
3.0
V
I
CP
PP
1MHz
3.5
SETTLING = 5mA
= 5V
10M
–61dBc
4.0
V
V
DD
P
2MHz
= 5V
4.5
= 3V
100M
5.0